how ot save to local storage code example
Example 1: javascript set local storage value
var testObject = { 'one': 1, 'two': 2, 'three': 3 };
localStorage.setItem('testObject', JSON.stringify(testObject));
var retrievedObject = localStorage.getItem('testObject');
console.log('retrievedObject: ', JSON.parse(retrievedObject));
Example 2: javascript save data to local storage
localStorage.lastname = "Smith";
document.getElementById("result").innerHTML = localStorage.lastname;
localStorage.removeItem("lastname");